Adaptation of micro- and metafauna in activated sludge with microbial augmentation to shock loading with amaranth

Wastewaters from the industrial sector and, in particular, those textile industry have a diverse composition of organic dyes. These dyes are xenobiotics for living organisms falling into natural water, can lead to severe consequences aquatic flora and fauna. This is case with azo-dyes, such as, example, amaranth. The adaptive responses micro- metafauna communities activated sludge towards shock loading high concentrations azo-dyes wastewater treatment plants (WWTPs) been poorly studied. aim this research was study adaptation mechanisms amaranth (200 mg/L)with without addition Pseudomonas aureofaciens AP-9 as bioaugmentation agent (3.03 × 107 cells/mL). To achieve this, change quantities key groups monitored course model biodegradation process involving real WWTP toxic pollutant at concentration 200 mg/L. results showed that amaranth, microfauna changed very quickly. In addition, positive effect added strain observed metafauna. bacteria homogenous form provide easily accessible food macro-organisms contribute their conditions shock. particularly pronounced representatives free-swimming ciliates small flagellates.